The study, in mice, raises the prospect of memory manipulation in humans. It
also shows how malleable memories are, in terms of factual content and the
feelings evoked by our recall of past events.

Steve Ramirez, a neuroscientist at Massachusetts Institute of Technology and
co-author, said: “We can now go in and study these memory centres and tinker
with them to change the content. Our memories feel like a tape recorder of
the past, but in reality it’s a reconstruction that is constantly being
warped